Receptacle and closure



July 20, 1937. w. LOCKHART RECEPTACLE AND CLOSURE Filed May 2, 1935INVENTOR. Y Z ockhar William fawn 6;. ATTORNEYS' Patented July 20, 1937REcEP'rAcLE AND CLOSURE William Lockhart, Cleveland, Ohio, assignor toCornell Securities Corporation,

Cleveland,

Ohio, a corporation of Delaware Application-"May 2;1935, Serial No."=-19,43'l

7 Claims.

My invention is an improvement in metallic receptacles and closurestherefor and relates more particularly to a clamping ring for removablyclamping the cover on the receptacle in fluid tight sealed relation.

One of the objects of the invention resides in a split clamping ringexpanded or contracted by means of a link and lever mechanism connectingthe ends of the ring and by which the closeing pressure on the drumcovermay be applied first to fix the 'cover in place and subsequently toseal the cover by additional pressure in fluid tight sealed relationto'the drum.

Another object of the invention is to provide a device of this kindemploying separate operating leversto apply different degrees of closingpressure to the cover.

A further object is to provide a link and lever operating mechanismconnecting the ends of the ring for applying a predetermined closingpressure uniformly around the ring and a supplemental lever connectedwith one of said ring ends and with said other link to apply anadditional closing pressure on the ring when the supplemental lever isoperated.

' Another objectof my invention consists in a compound link and leverclosing mechanism for a split channeled clamping ring-of the classdescribed, which is simple of construction, low in costof manufactureand which operates externally of the ring."

A still further object is such a clamping mechanism which, when the ringis operated to exert a closing pressure onthe cover, offerssubstantially no external obstructions which, if present, mightinterfere with the storage of the drums. ""Other objects andf advantagesof myminvention' will'become apparent as the following description of anembodiment'thereof progresses, reference being made to the accompanyingdrawing in which like reference characters are employed to designatelike parts throughout'the 'same, g

' Figure l isa. top plan view of-a covered drum showing an embodiment ofmy invention applied inuse; 'i

Figure 2 is an enlarged section taken online 1-2 of Figure 1;

Figure 3 is .a fragmentary viewof an embodi- -ment of myjinventionshowing' the parts in position for. fully contracting thering;

\ Figure 4 is a section taken on line 4,-lof

Figure 3; r

(c1. 22ll61) Figure 5 is a. section taken on line 5-5 of Figure 3;

Figure 6 is a view similar to Figure 3 but shows the ring expanded andthe operating mechanism in open position; and,

Figure'l. is a side elevation of the parts shown in Figure 3.

Referring now more particularly to the drawing, the barrel'or drum. isindicated at I. The

upper open end of the container is formed with a peripheral head 2. Acover 3 comprising'a cupped'or depressed head, having 'a'peripheralupwardly and outwardly extending flange ,4, is supported by the bead 2in such a manner that the cupped portion of the'head or cover may betelescopedior a short distance within the open end of the drum, asillustrated inFigure 2. It will be noted that a portion of the flange 4is of substantially arcuate cross section to conform with .theapproximate curvature ,of the upper surface of the head. A packing 5consisting of an annulus of any suitable packing material, such asflexible rubber tubing or cork, is interposed between the flange 4 andthe bead 2. I

According to the present invention, I have provided an improved meansfor removably securing the cover on the drum. or receptacle to effect afluid tight seal therebetween'by exerting a substantially uniform andfirm pressure along the cover flange and bead in a directionsubstantially parallel'to the longitudinal axis of the drum.

Such means preferably includes a transversely split,'channeled clampingring 6 ofsubstantially U-shaped cross section and which is capable ofbeing expanded and contracted by suitable In the form illustrated theupper and means. lower-flange and bead engaging walls respectively ofthe ring converge slightly toward theouter diameter of the ring andengage the'cover flange and bead of the container to press the-sametogether tightly when the ring is contracted. However,,.it is tobeunderstood that the ring and receptacleopen 'end may be so designed thatthe cover will .be pressed into a tight seal with a shoulder formed atthe receptacle open end when thering is expanded. Thatis, instead of there ceptacle being formed with arolledbead 2, the open end may be formedwith an annular shoulder and an annular channel for receiving anexpander type ring, a packing ring and the cover. By contracting thetypeof clamping ring herein illustrated, the cover flange will bepressed tightly against the packing 5 and the supporting bead, 2 under asubstantially vertical pressure.-

trated in Figures 1, 3, 6 and '7; A pair of operating levers 'I and 8are pivotally connected with the respective ends 9 and Ill of the ringdefining the split therein. Pins or rivets II and I2 provide thesepivotal connections and the ring ends 9 and II] are preferablyreinforced by welding an additional thickness of metal I3 thereto, asshown. When the levers I and 8 are in ring contracted position as shownin Figures 3 and '7 they are caused to lie within the outer diameter ofthe ring and close to-the top surface thereof, thus eliminatingobstructions which might otherwise interfere with storing thereceptacles. Suitable retainers I4 for receiving and holding the outerends of the respective levers when the ring is fully contracted, may befixed to the ring by welding or otherwise. To release one of the leversfrom a retainer I4 it is merely necessary to depress the end of thelever until it will clear the latch I5, and then swing the leveroutwardly of the ring.

One end of the ring is slotted as at It to slidably receive the pin H. Apair of links I8 and I9 of different lengths are pivotally connected. at20 and 2! at one end respectively to the levers I and 8, and areconnected together at their other ends by means of the pin II operatingin the'slot I6. In the embodiment shown the link I8 is the longer and isoffset out of its longitudinal plane at 22 to underlie the shorter linkI9.

In removably clamping a cover on the open end of a metallic receptacleof the type described, the cover is placed within the open end and theflange 4 restsupon the packing ring 5 and the supportingbead 2. The ringSis expanded by throwing the levers I and 8 to the position shown inFigure 6. The ring is then placed over the cover flange and bead untilthey-lie in the other and when the lever I has reached its limit ofmovement as defined by its retainer I4, a suf-' flcient closing orvertical pressure will be exerted uniformly around the ring to clamp thecover se curely in place upon the open end of the receptacle. Thispressure may not be sufficient to effect a fluid tight seal between thecover and v the receptacle, but it is sufficient. for shipping thereceptacles empty to the user. In this movement of lever I the pin Ilslides to the extreme left in the slot I6 and engages the end of theslot to complete the driving connection between the ring ends. The lever8 will not be thus swung to the left but will remain in the positionshown in Figure 6. In-order to more: fully contract the ring andbringits end closure together and thereby exertan even greater closingpressure upon the-cover and head, the operator swings the lever 8 to theright in Figure 6 to its limit of movement in this direction as definedby theother retainer I4. During this movement of lever 8 a drivingconnection is made through the shorter link III, the pin I1, the link I8andthe lever I to the opposite end'of the ring, and the pin I'I thentravels to the right in the'slot I8 to the approximate position shown inFigures 3 and 7. When each of the levers I and 8 reaches its reta ne thelever end isslipped. up under the latch I5 and is thereby retained inplace.

Contraction of the ring to its fully closed position may also beaccomplished by closing the levers I and 8 simultaneously, or by closinglever 8 and then closing lever I, but I have found that the first methodis preferable because it requires less effort and because the cover canfirst be dumped accurately and then the ring further contracted to applythe sealing pressure to the cover. I

It will be noted that by mounting the operating levers and links uponthe upper surface of the ring and permitting the levers to swingoutwardly thereof, they are more conveniently reached and handled by theoperator.. The operator may stand diametrically opposite of the ringends and reach over the top of the drum grasp the levers I and 8 andpull them toward imin clockwise and counter-clockwise movements.

While I have described the illustrated embodiment of my invention insome particularity, obviously many others will readily occur to thoseskilled in this art, and I do not, therefore, limit myself to theprecise details shown and described but. claim as my invention allembodiments, variations and modifications thereof coming within thescope of the appended claims.

I claim: I

1. A device for removably clamping a cover on the open end of areceptacle including a split locking ring engaging the cover and aportion of the receptacle to press the same together whenthe ring iscontracted,- and means for contracting said ring including a leverpivotally connected with each end of said split ring and operable inopposite directions to contract said ring, and a pair of links pivotallyconnected together at adjacent ends with an end of the ring and withsaid levers at their respective other ends.

2. The-combination with a metallic receptacle having a bead around itsopen end and a cover for said open end having a flange fitting over thebead, and a packing member between the flange and bead, of a splitlocking ring to press the cover flange and beadtogether in sealingrelation, and means for contracting or expanding the ring including alever pivotally connected with each endof said split ring and a "pair oflinks pivotally connected together-at adjacent ends with an end of thering and with said levers at theirrespective other ends, said leversbeing operable independently of each other to apply independent closingpressures to the cover and receptacle.

3. A device for removably clamping a cover on the open end of areceptacle including a split locking ring engaging the cover and aportion of the receptacle to press the same together when the ring iscontracted, and means for contracting said ring including a leverpivotally connected.

with each end of said split ring and operable in opposite directions tocontract said ring, and a pivoted member connecting said levers, saidpivoted member comprising a pair of links pivotally connected togetherat their adjacent ends with an end of the ring and with the respectivelevers at their opposite ends.

4. A device for removably clamping a cover on the open end of areceptacle including a split locking ring engaging the cover and aportionof the receptacle to press the same together when the ring iscontracted, and means for contracting said ring including alevenpivotallyconnected with each end of said split ring and operable inopposite directions to contract said ring, and a pair of links pivotallyconnected together at adjacent ends and with said levers at theirrespective other ends, one end of said ring having a slot therein and aprojection carried by said links and slidable in said slot.

5. A device for removably clamping a cover on the open end of areceptacle-including a split locking ring engaging the cover and aportion of the receptacle to press the same together when the ring iscontracted; and means for contracting said ring including a leverpivotally connected with each end' of said split ring and operable inopposite directions to contract said ring, and a pair of links pivotallyconnected together at their adjacent ends with an end of the ring andwith said respective levers at their other I ends, one of said linksbeing of greater length than the other link whereby an initial closing ipressure may be applied to the cover and receptacle prior to asubsequent additional closing pressure.

locking ring engaging the cover and a portion of the receptacle to pressthe sametogether when the ring is contracted, and means for contractingsaid ring including a lever pivotally connected with each end of saidsplit ring and operable in opposite directions to contractthe ring, andpivoted members connecting said levers and having a sliding drivingengagement with an end of the ring.

'7. A device for remov,ably clamping a cover on the open end of areceptacle including a split locking ring engaging the cover and aportion of the receptacle to press the same together when the ring iscontracted, and means for contracting said ring including a leverpivotally connected with each end of-said split ring and operable inopposite directions to contract the ring, and pivoted members connectingsaid levers and having a. sliding driving engagement with an end of thering, said ring end having a guide and a? member carried by the pivotedmembers slidable along said guide.

WILLIAM LOCKHART.

